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Master's Dissertation
DOI
https://doi.org/10.11606/D.76.2021.tde-09092021-120048
Document
Author
Full name
Adonai Hilario da Silva
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2021
Supervisor
Committee
Napolitano, Reginaldo de Jesus (President)
Barranco, Antonio Vidiella
Vianna, Reinaldo Oliveira
Title in Portuguese
Desacoplamento dinâmico contínuo generalizado: implementação
Keywords in Portuguese
Desacoplamento
Informação
Proteção
Ruído
Abstract in Portuguese
Os computadores quânticos são dispositivos de enorme interesse para a comunidade científica. Em um computador clássico a informação é processada através de bits, que assumem valores 0 ou 1. O análogo em um computador quântico são os qubits, que podem assumir qualquer combinação de dois estados 0 e 1. Para evitar a perda de informação antes que a medida final seja feita é necessário proteger os qubits de ruídos externos e um dos métodos usados para tal feito é o desacoplamento dinâmico contínuo. O objetivo deste trabalho é estudar uma extensão deste método para qudits (sistemas quânticos de dimensão d), assim como simularmos a implementação prática do método em um caso de qutrits (d = 3), usando a estrutura hiperfina do nível fundamental o átomo de 87Rb, mostrando que, neste caso, é possível realizar continuamente qualquer operação do grupo de simetria SU(3) com alta fidelidade.
Title in English
Generalised continuous dynamical decoupling: implementation
Keywords in English
Decoupling
Information
Noise
Protection
Abstract in English
Quantum computers are devices of great interest to the scientific comunity. In a classical computer, information is processed through bits, which assume values 0 or 1. The analog for quantum computers are the qubits, that can be in any superposition of two states 0 and 1. In order to avoid information loss before the final measurement is performed it is necessary to protect the qubits from external noises and one of the methods used for this purpose is the countinuous dynamical decoupling. The objective of this work is to study an extension of this method for qudits (d-dimentional quantum systems), as well as to simulate a practical implementation of this method in the case of qutrits (d = 3), using the ground level hyperfine structure of the 87Rb atom, showing that, in this case, it is possible to continuously perform any SU(3) group operation with high fidelity.
 
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Publishing Date
2021-09-17
 
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